Cita APA (7a ed.)

Parker, T. J., & Haswell, W. A. (1940). A Text-book of zoology. Macmillan.

Cita Chicago Style (17a ed.)

Parker, Thomas Jeffrey, y William A. Haswell. A Text-book of Zoology. London: Macmillan, 1940.

Cita MLA (9a ed.)

Parker, Thomas Jeffrey, y William A. Haswell. A Text-book of Zoology. Macmillan, 1940.